Pressure and temperature dependent up-conversion properties of Yb^(3+)-Er^(3+) co-doped BaBi_4Ti_4O_(15) ferroelectric ceramics  

作　　者：戚兴国 随志磊 邓宇航 代如成 王中平 张增明 丁泽军 

机构地区：[1]Department of Physics, University of Science and Technology of China [2]The Centre for Physical Experiments, University of Science and Technology of China [3]Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China

出　　处：《Journal of Rare Earths》2014年第9期879-883,共5页稀土学报（英文版）

基　　金：Project supported by Fund for Fostering Talents in Basic Science of the National Natural Science Foundation of China(J1103207);the National Natural Science Foundation of China(11274288,21002097);the National Basic Research Program of China(2011CB932801,2012CB933702);Ministry of Education of China(20123402110034)

摘　　要：Yb^3＋ and Er^3＋ co-doped BaBi4Ti4015 （BBT） ceramic samples showed brighter up-conversion photoluminescence （UC-PL） under excitation of 980 nm. The monotonous increase of fluorescence intensity ratio （FIR） from 525 to 550 nm with temperature showed that this material could be used for temperature sensing with the maximum sensitivity to be 0.0046 KI and the energy dif- ference was 700 cm-1. Moreover, the sudden change of red and green emissions around 400 ℃might imply a phase transition. With increasing pressure up to 4 GPa, the PL intensity decreased but was still strong enough. These results illustrated the wide applications of BBT in high temperature and high pressure conditions.Yb^3＋ and Er^3＋ co-doped BaBi4Ti4015 （BBT） ceramic samples showed brighter up-conversion photoluminescence （UC-PL） under excitation of 980 nm. The monotonous increase of fluorescence intensity ratio （FIR） from 525 to 550 nm with temperature showed that this material could be used for temperature sensing with the maximum sensitivity to be 0.0046 KI and the energy dif- ference was 700 cm-1. Moreover, the sudden change of red and green emissions around 400 ℃might imply a phase transition. With increasing pressure up to 4 GPa, the PL intensity decreased but was still strong enough. These results illustrated the wide applications of BBT in high temperature and high pressure conditions.

关 键 词：BaBi4Ti4O15 piezoelectric ceramic rare earths UP-CONVERSION PRESSURE temperature 

分 类 号：TQ174.1[化学工程—陶瓷工业]